package javaStudy.test;

public class Cal {
    public void sum(int x,Integer y,int[] arr){
        for(int i = 0; i < arr.length; i++){
            arr [i] = x++ * --y;
        }
    }
    public void dengchu(){
        System.out.println("登出成功");
    }

    public void denglu(){
        System.out.println("登陆成功");
    }
}